Burglar-alarm door-lock.



Iva/663,586. Patented Dec. u, I900. J. SIMUNI.

BURGLAR ALARM DOOR LUCK.

(Applimflion filed June 21, 1900.

(No Model.)

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JENNIE SIMONI, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TOIVILLIAM K. HAYS AND IRA C. HAYS, OF SAME PLACE.

BU RG LAB-ALARM DOOR-LOCK.

SPECIFICATION forming part of Letters Patent No. 663,586, dated December11, 1900.

Application filed June 21, 1900. Serial No. 21,037. (No model.)

To all whom it may concern:

Be itknown that I, JENNIE SIMONI, a citizen of the United States,residing in the city and county of San Francisco, in the State ofCalifornia, have'invented an Improvement in Burglar-Alarm Door-Locks;and I hereby declare the following to be a full, clear, and exactdescription of the same.

My invention relates to a device for secur- 1o ing doors from theinside, an alarm, and a detent, and a novel mechanism by which saiddetent is released to allow the alarm to be sounded or energizedwhenever ressure is applied tending to open the door.

Myinvention also comprises details of construction, which will be morefully explained by reference to the accompanying drawings, in which-Figure l is a sectional view of my device in position to lock the door.Fig. 2 is a face View of the base-plate with the alarm-gong removed.Fig. 3 is a perspective view of a portion of the device.

A is the base-plate, upon which is mounted a gong or alarm of anydescription, as shown at 2, secured upon a central spindle, whichsupports it from the base-plate. The hammer 10, by which the alarm issounded, is operated by a spring-actuated escapement and clockworkmechanism of any usual or wellknown description.

In order to employ this device for the purpose of locking thedoor andproviding means for operating it Whenever pressure is applied 5 to openthe door, I have shown points 12 and 13. The points 12 are fixed in thelower part of the plate A and adapted to rest upon the floor, and, thedevice standing at an incline, the upper point 13 rests against thedoor.

This upper point is sufficiently sharp to prevent it from slipping onthe door, and if pressure is brought it will act directly against thispoint. The point 13 has a stem or shank 11, which is slidable in asuitable guiding 5 portion of the upper part of the base A. Within thebase A, which is chambered for the purpose, is fitted an annular ring14. This ring has pivot-pins at 15 at opposite sides and approximatelyin line with the Genter, these pins being supported upon the rim orflange of the plate A, so that the ring 14 may be tilted about thesepivot-points. At the lower end of this ring 14 is a detent 16, and thisdetent is normally raised, so as to engage the lever-arm 9 by a spring17, which by engaging the detent with the lever-arm prevents theoperation of the hammer. The opposite side of the ring has a beveled orinclined surface 18, which stands in line with the inner end of the stem11 of the point 13. 6o Aseparate spring may, if desired, be so placed asto press the stem 11 outwardly; but I have found that a single spring17, which acts to hold the lower edge of the ring up with the detent inengagement, is also sufficient to depress the opposite end and push thestem 11 outwardly. The device being in position, standing at an inclineagainst the door, as shown, if pressure is applied to push the doorinwardly the point 13 and its stem 11 are cor- 7o respondingly pushed,and the stem, sliding in its guide, acts against the inclined face 18 atthe upper side of the ring and raises this side of the ring, which,tilting upon the pivot points 15, correspondingly depresses the oppositeside until the detent is disengaged from the arm 9 or equivalent stop,and the alarm is thus allowed to be sounded.

The device is simple and extremely efficient for the purpose.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with a spring-actuated alarm of a locking device,consisting of fixed points connected with the base-plate of the alarmadapted to rest upon the. floor, a point adapted to rest against thesurface of the door and having a shank slidable in the upper part of thebase-plate, an annular ring having its opposite sides pivoted to thebaseplate, said ring carrying a detent upon one edge, which engages andnormally retains the alarm out of action, and an incline upon theopposite side in line with the slidable shank 5 of the movable pointwhereby the movement of the point disengages the detent and allows thealarm to sound.

2. Adoor-lockingand alarm apparatus consisting of a springactuatedalarm, points fixed to the lower side of the base-plate adapted to restupon the floor, a point slidable in the upper part of the base-plate andadapted to rest against the door when theplate stands at an anglebetween the floor and the lower part of the door, a ring fitting thebase-plate having the pivot points on opposite sides about which it istiltable, a detent upon the lower side of the ring, a spring by whichthe ring is tilted to cause said detent to engage the alarm and normallyhold it out of action, an inclined or beveled lug upon the upper side ofthe ring in line with the slidable shank of the upper point wherebytheinward movement of said shank acts to tilt the ring and disengage thedetent to allow the alarm to he sounded.

In witness whereof I have hereunto set my hand.

JENNIE SIMONI.

Witnesses:

A. H. QUATMAN, B. H. NELSON.

